Tiffany Threadgould, of RePlayGround, has a last-minute green crafting idea for you, this time from the New York Hall of Science. Hang on to the tabs from your soda pop cans and put them to good use as a jewelry finding for an upcycled bracelet.

But that’s not the only idea Tiffany has to share. Next week she’ll be hosting crafting classes at NYSCI with an emphasis on using a lot of the waste that’s generated during the holidays.